Certainty Herbicide - 1.25 oz.

$91.45

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4 out of 5 stars Rating: 4.2

13 Reviews | 53 Q&A

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Certainty Herbicide - 1.25 oz. bottle (1.25 oz)

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Certainty Herbicide - 1.25 oz.

Certainty Turf Herbicide is a selective, post-emergent herbicide that controls labeled weeds in residential and commercial turf.

Certainty Turf Herbicide is easy and flexible to use and has excellent control of both purple and yellow nutsedge. Combined with a non-ionic surfactant, Certainty Turf Herbicide attacks nutsedge through broadcast applications or spot treatments.

With Certainty Turf Herbicide, you get the most complete package of turf safety, application flexibility and broad-spectrum weed control versus the competition.

Only for use on the following warm season grass types: Bermdagrass (common or hybrid), Bahiagrass, Buffalograss, Centipedegrass, Kikuyugrass, St. Augustinegrass, Seashore paspalum, and Zoysiagrass.




Certainty Turf Herbicide controls tough weeds in residential and commercial turf.

  • In "warm" season turf, Certainty Turf Herbicide will control broadleaves, sedges and kyllinga.

Certainty Turf Herbicide is easy and flexible to use and has excellent control of both purple and yellow nutsedge. Combined with a non-ionic surfactant, Certainty Turf Herbicide attacks nutsedge through broadcast applications or spot treatments.

With Certainty Turf Herbicide, you get the most complete package of turf safety, application flexibility and broad-spectrum weed control versus the competition.

*Note: Certainty Turf Herbicide is not labeled for golf course putting greens or within 4 feet of the putting green.

Rating Snapshot

5 stars   9
4 stars   1
3 stars   1
2 stars   0
1 star   2

See all 13 reviews »

Average Customer Rating
4 out of 5 stars (13)

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  • 13 of 13 people found this review helpful:

    5 of 5 stars  Kills poa annua in centipede
    By Rich in Columbia, SC on 02/22/2015
    Verified Purchase

    After fighting poa annua for the last few years it is good to find something that works. It seems expensive for such a small amount of product, but the amount used per gallon of water is so small it is cost effective. Works much better than the atrazine I used before. Great product and produced results in only 2 weeks.

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  • 10 of 12 people found this review helpful:

    5 of 5 stars  It killed Johnsongrass!
    By in Southern Illinois on 07/01/2013
    Verified Purchase

    After trying many products to kill johnsongrass, tried Certainty and in 10 days the grass was dead!

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  • 7 of 7 people found this review helpful:

    5 of 5 stars  Green Kyllinga in Florida St Augustine grass
    By Homeowner in Florida on 04/30/2014

    I applied Certainty to my St Augustine lawn in April. The St Augustine did not show any signs of stress. Kyllinga did not shrivel up and die the next day, but it did stop coming up in my lawn. I'm very satisfied. The rest of the 1.25 oz bottle should last me for years to come so it is cost effective in the long run.

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  • 6 of 7 people found this review helpful:

    5 of 5 stars  Quackgrass Dead On Arrival!
    By Ken in Indian Trail on 05/26/2016

    Used properly per instruction, quack grass started turning yellow on 3rd day, bright yellow by the 7 day, and wilting over 2 weeks out. Must use the Dyne Amic with this product. See my other review for (Drive) product. Newly planted Princess 77 lawn. Killed all the Quackgrass, the Bermuda kept smiling!

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  • 5 of 5 people found this review helpful:

    5 of 5 stars  Awesome
    By Jeff in Montgomery, Alabama on 07/07/2015

    I had a bad infestation on nutsedge and we were getting a lot of rain everyday decided to mix it up and give it a shot in front of the rain one day only three hours before receiving half an inch of rain but within 7 days the sedge is already 90% dead. Well worth the money

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  • 4 of 5 people found this review helpful:

    5 of 5 stars  The best results ever!
    By Dennis in Leland, NC on 08/08/2015
    Verified Purchase

    This stuff really works. Results are slow, 2-3 weeks, but follow directions, use a good quality surfactant, and watch weeds disappear. Even with the blistering heat from this summer, no turf damage, no discoloration- except for the dying weeds, both sedge/grasses and broadleaf! In my centipede lawn, the best results I've ever achieved.

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  • 3 of 3 people found this review helpful:

    5 of 5 stars  Expensive but works well
    By Jim in Chadds Ford, PA on 05/12/2015
    Verified Purchase

    Effective at controlling quickgrass.

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  • 2 of 2 people found this review helpful:

    4 of 5 stars  Good but a bit slow
    By Charles in Athens AL on 08/30/2016

    Another product, like Metsulfuron, that I use to remove cool season grasses from Bermuda, but which also works on sedges, and is similarly slow like Metsulfuron. Wait a week or two in spring and the poa will die off. Together with AmTide in the same bottle with surfactant, you can eradicate fescue and poa. When mixed with MSMA later in summer, it will really knock out dallisgrass, though you could just get rid of dallis with only MSMA. It comes with a little measuring spoon in the box to help you get the right amount per gallon of water.

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  • 2 of 2 people found this review helpful:

    5 of 5 stars  Great product
    By Shareem in Fort Worth TX on 05/08/2016

    Certainty worked better than I expected . I used it to control Tall Fescue in my Bermuda during spring .It worked incredibly well ! It also destroyed crabgrass nuts edge and every other weed listed on its label growing in my yard . Buy it . You will not be disappointed .

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  • 1 of 1 people found this review helpful:

    5 of 5 stars  Using Certainty
    By Marilyn in Kiln, MS on 10/02/2016

    Works well in Sprayer. Expensive but if it rids yard of certain weeds, I am all for it. In the South, we really have a problem with Nutsedge.

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  • 0 of 2 people found this review helpful:

    1 of 5 stars  Didn't work on my lawn
    By Jason in Little Rock on 04/18/2017

    Didn't touch weeds in my Bermuda lawn. Been 2 1/2 weeks with ZERO effect on any variety. Read directions carefully. Mixed in back pack sprayer, with surfactant, and blue marking dye to see overlaps. Disappointing.

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  • 0 of 1 people found this review helpful:

    3 of 5 stars  Certainty Herbicide
    By Al in Texas on 05/09/2017

    Used as directed for nut sedges, first attempt very poor results. After three weeks, will reapply and will post update. The very thick nut sedge I had to use Round Up because it has taken over that area and was afraid to wait anymore for Certainty to work. Three stars and pending...

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  • 0 of 1 people found this review helpful:

    1 of 5 stars  Certainty herbicide
    By Donald in Albertville mn on 05/09/2017

    Product did not kill anything that it was suppose to... didn't even kill dandelion. Waste of money

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See all 13 customer reviews »

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Most Helpful Q&A's

05/02/2013 Dean from Iowa

QControlling quackgrass in Kentucky Bluegrass
The Michigan State University extension website says "If your lawn is primarily Kentucky bluegrass, there is a selective herbicide that will remove the quackgrass without killing the rest of your lawn. This product is only available to professional lawn care operators, and they need to make two applications on a 14-day interval. The name of the product is Certainty." However, your Q&A section includes an answer that says Certainty is not "labeled for use on Kentucky Bluegrass." Can you clarify the apparent disconnect?

ASince we do not make this product we have to go by what the manufacturer supplies us with. Kentucky Bluegrass is not on the label so we have to assume it cannot be used on that type of grass. However, here is Monsanto's telephone number 800-332-3111. We recommend contacting Monsanto and speaking with the customer service agent there to verify if this product is safe for kentucky Bluegrass.

10 of 13 people found this answer helpful.
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05/12/2011 Pete

QHow soon can I re-seed after application of Certainty?
Live in MA. Have a predominantly KBG lawn, with some tall fescue creeping in places that I would like to get rid of. After application, how soon can I re-seed any bare spots or over-seed the whole lawn? Thanks!

AAccording to the product label, you should wait at least 3 weeks before re-seeding or over-seeding with Certainty.

8 of 11 people found this answer helpful.
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03/16/2012 Jesse from Des Moines, Ia

QQuackgrass - Is Q4 effective at killing quackgrass?
Are there any chemicals available through your company that can eradicate quackgrass?

AQuackgrass is a grassy weed, so you need a product labeled for grassy weeds.  Certainty is our most popular product for quackgrass and other grassy weeds.

8 of 10 people found this answer helpful.
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06/25/2010 Michael

QI am applying Certainty Herbicides and the instructions indicate I need Non-ionic surfactant. What would be an example of that?
I will be applying this to my bluegrass lawn.

AWe offer DyneAmic Surfactant on our website. DyneAmic is a high quality non-ionic surfactant that greatly enhances the effectiveness of Certainty and other herbicides and fungicides on lawns, ornamentals, trees and landscape areas. The surfactant helps penetrate the natural waxy tissue of plants.

6 of 8 people found this answer helpful.
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04/19/2012 Brian from Marysville, Oh

QHow do I kill tall fescue in a KBG lawn?
I thought I was going to be able to use Certainty to kill the tall fescue in my KBG lawn until I read the note on the label change after 2011. What is the right product to use now?

AWe do not carry a product that will take fescue out of kentucky blue grass.  Unfortunately they are so closely related that you cannot selectively remove it with any product that we are aware of.  Your best option in this scenario is to kill the fescue with a Ranger Pro (glyphosate) product and then re-seed with your KBG.

6 of 8 people found this answer helpful.
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Most Recent Customer Questions

10/17/2016 Mike from Mccalla, Al

QHow do I dilute Certainty Herbicide to treat dallisgrass?
Or could you tell me How many gallons of water with one bottle of Certainty mix for? Spraying for Dallisgrass in the fall.

A

Per the Certainty Herbicide product label for dallisgrass suppression, you would use 1.25 oz per acre.  This would be mixed in 10-50 gallons per acre. The amount of water you use will vary as the water acts as the carrier.  For smaller areas, you would use 5 small (or 1 large) scoop per 2 gallons of water to cover 1000 sq ft.  At this rate one bottle will cover one acre.  Please refer to the product label for complete instructions for treatment and tank mixing recommendations.

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10/17/2016 Mike from Mccalla, Al

QHow do I dilute Certainty Herbicide?
If I am mixing this for 200 gallons and spraying at 2 gallons per minute, how much of this would I add? Also what is the best way of measuring this other than the scoop that comes with it?

A

The amount of Certainty needed will depend on the type of weed you are trying to control and the amount of water you use will vary as water only acts as the carrier and is not set on amount of product per gallon of water.  The rate range is 0.75 to 2.0 oz per acre mixed in 10 to 50 gallons of water per acre. The included scoop is generally the way to measure, but you can use another larger utensil (dedicated for this use or disposable) if desired.

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09/16/2016 Lawrence from Texas

QDoes Certainty Herbicide only suppress dallisgrass in a Bermuda lawn, or will it kill it?

A

Certainty Herbicide is only labeled for suppresion of dallisgrass in a Bermuda lawn per the product label. Please also be mindful that per that label the following application includes the use of MSMA, MSMA can cause injury to common and hybrid bermudagrass as well. It is recommended to test the following tank-mix recommendation on a small area prior to wide-scale use to determine if this application is suitable for your bermudagrass management objectives.

This is directly from the Certainty product label:

For suppresion of dallisgrass in bermudagrass turf, apply this product, when dallisgrass is actively growing, at a rate of 1.25 ounces per acre in a tank mixture with 2 pounds of MSMA per acre and 0.25 percent of volume nonionic surfactant (1 quart per 100 gallons of spray solution). Reapply this same tank mixture 2 to 4 weeks after initial application.

 

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09/05/2016 Bubba from Hammond, La

QCan I apply Certainty Herbicide - 1.25 oz. over mature Azalea bushes?
Need to kill Virginia Creeper. Secondarily would like to kill ivy in those Azaleas.

A

Certainty Herbicide - 1.25 oz. is labeled to be applied over Dwarf Azalea. It will also treat for the Virginia Buttonweed and ivy you are wanting to kill.

1 of 1 people found this answer helpful.
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08/13/2016 Andy from Phoenix, Arizona

QWill Certainty Herbicide also kill spurge in a Bermuda lawn?
Will it kill splurge and how long do I have to spray before overseeding my bermuda lawn with perennial rye?

A

Unfortunately, Certainty Herbicide is not labeled for spurge. We would recommend a product like Monterey Spurge Power, as it is labeled to be used in a Bermuda lawn. You would not want to do any seeding any sooner than 3-4 weeks after application of this product.

1 of 1 people found this answer helpful.
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07/29/2016 Jeff from Paxton, Il

QCan Certainty be tank mixed with Tenacity?

A

According the the product label on Tenacity Herbicide, there has not been any testing on whether there are any issues with it being mixed with Certainty Herbicide or not. The manufacturer recommends doing a test on a small basis for compatibility. According to the Certanty Herbicide product label you would need to add water to the tank, then Certainty, then the Tenacity for the best mixture. 

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06/26/2016 Jeanne from Kansas City, Mo 6

QWill Certainty Herbicide kill poa trivialis when dormant?

A

Certainty Herbicide is labeld for control Poa Trivialis but Certainty Herbicide is a post emergent herbicide that requires the target weeds to be actively growing in order for the Certainty Herbicide to kill or supress it.

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06/15/2016 Bart from Frisco, Tx

QWhen are the best times of the year to apply Certainty to kill Poa Annua?

A

The best time to apply Certainty for poa annua or for any of the other listed weeds on the label would be when they are actively growing. You should mix Certainty with a surfactant to increase its effectiveness.

It would be best to call your local county extension office for when to apply any type of herbicides or insecticides in your area. They will know exactly when you should apply it in your specific county.

You can find your local county extension office information here:  http://www.csrees.usda.gov/Extension/index.html

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05/25/2016 Barry from Indiana

QCould you tell where I can find the date of manufacture on a bottle of Certainty Herbicide- 1.25oz?
Manufacturer Date

A

The manufacturer date to the Certainty Herbicide 1.25oz is located inside the box, on the bottom of the bottle.

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04/19/2016 Billy from Prattville, Al

QDoes Certainty Herbicide kill burweed?

A

Yes, Certainty Herbicide is labeled to eradicate burweed. Please refer to the product label for complete mixing and application instructions.

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See all 53 questions »


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